Magnetic and Structural Phases of Monolayer 02 on Graphite

J. P. McTague, Mourits Nielsen

    Research output: Contribution to journalJournal articleResearchpeer-review


    Neutron diffraction studies of O2 thin films physisorbed on the basal plane of graphite show three distinct two-dimensional crystalline phases, all incommensurate with the substrate lattice. The low-temperature monolayer phase has a distorted triangular structure analogous to the closest-packed plane of bulk α-O2. As in α-O2, a magnetic superlattice reflection persisting up to T=10 K indicates a well-developed antiferromagnetic order. Above T=10 K the structure is similar to the closest-packed plane of β-O2.
    Original languageEnglish
    JournalPhysical Review Letters
    Issue number10
    Pages (from-to)596-598
    Publication statusPublished - 1976


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